This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A046620 #10 Jun 22 2013 16:05:41 %S A046620 1,1,1,1,1,1,1,1,1,1,1,1,1,6,6,1,1,1,1,11,12,11,1,1,1,1,16,23,23,16,1, %T A046620 1,1,1,21,39,46,39,21,1,1,1,1,26,1,12,1,17,1,17,1,12,26,1,1,1,1,31,86, %U A046620 1,29,1,34,1,29,86,31,1,1,1,1 %N A046620 First denominator and then numerator of each element of the 1/5-Pascal triangle (by row), excluding 5's. %e A046620 1/1; --> 1 1 %e A046620 1/1 1/1; --> 1 1 1 1 %e A046620 1/1 1/5 1/1; --> 1 1 1 1 1 %e A046620 1/1 6/5 6/5 1/1; --> 1 1 6 6 1 1 %e A046620 1/1 11/5 12/5 11/5 1/1; --> ... %e A046620 1/1 16/5 23/5 23/5 16/5 1/1; %e A046620 1/1 21/5 39/5 46/5 39/5 21/5 1/1; %e A046620 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ... %Y A046620 Cf. A046601. %K A046620 tabf,nonn,frac,less %O A046620 1,14 %A A046620 _Mohammad K. Azarian_